JPH06269329A - Manufacture of decorative panel - Google Patents

Abstract

PURPOSE:To provide a decorative panel with an excellent appearance and bonding strength, can join a water base adhesive under a water-containing condition even if both adherends are non-porous, and of which the process is simple, and which does not contaminate the environment by a method wherein in a process to join a core material of which the butt end part is constituted of a non-porous edge material, and non-porous surface boards, they are bonded by inserting a porous sheet form object between them. CONSTITUTION:In a process to bond core material 1 which is formed in such a manner that the butt end part of a frame material 2 of a flush panel core material is constituted of a non-porous edge material 3, to non-porous surface boards 4, 4 using a water-based adhesive 5, a porous sheet form object is inserted between the non-porous edge material 3 and non-porous surface board 4, and they are bonded to form a decorative panel 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a decorative panel used as a member such as a top plate and a door of furniture, housing equipment, office equipment and the like.

[0002]

2. Description of the Related Art Conventionally, when a water-based adhesive is used as a method for producing a flush structure decorative panel in which a front plate and an edge member are made of a non-porous material, after bonding the front plate and the core member, After trimming the mouthpiece, and secondarily adhering the edge material to the surface of the mouthpiece, or providing a groove of a fitting structure and fitting and fixing a part of the edge material, the upper and lower ends of the edge material are fixed. The method of chamfering was used.

Further, when using a core material in which a rim material is already formed at the wood mouth portion, the front plate and
Synthetic rubber adhesive is applied to the adhered surface of each core material by a method such as brushing, spraying, etc., and after drying to remove the solvent by volatilization, it is pasted, pressed to form a panel, and finished with a wood finish. There was a way.

Alternatively, there has been a method in which a solventless thermosetting resin adhesive such as an epoxy resin is applied to the adherend surface, adhered, cured and adhered.

[0005]

However, in the above method, there are various factors depending on the appearance of the finish of the edge material of the wood opening, the strength of the edge material, the workability in the bonding process of the core material and the panel, or the working environment. It contained problems.

[0006] After a front plate is attached to a porous material such as a wood core material using an aqueous adhesive, the wood mouth is trimmed,
Further, the method of secondarily fixing the non-porous edge material has advantages such as good workability in the step of attaching the core material and the front plate, and no problems such as loss of adhesive and odor. Have,
The edge material that constitutes the wood mouth part had to be secondarily fixed later.

As a method of secondarily fixing the edge material to the mouth part, the edge material having a surface corresponding to the mouth part of the decorative panel and the mouth surface are each hot-melt adhesive, synthetic rubber adhesive,
A method of adhering with a water-based adhesive, a method of providing a groove having a shape in which a part of the edge material is fitted in the mouth end surface, and fitting and fixing a convex portion of the edge material have been performed.

In these methods, since the edge material is secondarily fixed, the number of steps is increased, and the adhesion, the strength reliability of the fixing portion, the shape of the edge material, and the finished appearance are not necessarily satisfactory. There wasn't. In particular, it has been impossible to expect a high-quality design and strengthening the adhesive force of the joint portion, which are obtained by forming the decorative plate as the front plate so as to cover at least a part of the edge material.

[0009] In a method of forming a non-porous edge material in advance at the opening of the core material, applying a synthetic rubber adhesive to the front plate, the back surface and the core material surface, and adhering after drying, Although the reliability of the design strength of the edge material is improved, the workability is poor when the adhesive is applied by brushing or the like, and the loss due to the scattering of the adhesive is large when spraying with a spray gun.

Further, since the adhesive contains an organic solvent, it has been necessary to prepare a working environment and equipment which do not have a bad influence on ignition, odor and human body.

It is also possible to bond the non-porous surface plate and the non-porous edge material by using a thermosetting resin adhesive which does not require a volatile solvent such as epoxy resin, but the thermosetting resin bonding is also possible. The agent increases in viscosity during use, hardens when the pot life has passed, and eventually hardens, resulting in poor workability.Moreover, it is necessary to frequently clean the container and applicator, and to clean them. Since organic solvents are commonly used, it was necessary to take measures against odor and fire.

According to the present invention, in the step of adhering the non-porous surface plate and the core material having the non-porous edge material to the wood mouth portion, the porous sheet-like material is interposed to adhere the material. Even if the body is non-porous, it is possible to bond the water-based adhesive in a water-containing state, and to obtain a decorative panel with a simple process that does not pollute the environment and has excellent design and adhesive strength. To aim.

[0013]

According to the present invention, a non-porous front plate is made of a non-porous surface plate by using a water-based adhesive in a flash core material in which at least a part of a wood mouth portion is composed of a non-porous edge material. A method for producing a decorative panel, characterized in that, in the step of laminating so as to cover a part, the non-porous rim material and the non-porous surface plate are bonded by interposing a porous sheet-like material,
In particular, the non-porous edge material that constitutes the wood opening is a flash panel core material made of synthetic resin, the non-porous surface board is a melamine decorative board, and in the step of bonding with a water-based adhesive, This is a method for producing a decorative panel in which the porous sheet material interposed between the synthetic resin edge material and the melamine decorative board is a cloth or a non-woven cloth.

In the decorative panel of the present invention, the panel core material in which at least a part of the wood mouth part is constituted by a non-porous rim material is a thermosetting resin cast material or a heat-curable resin on the rim material of the wood mouth part. A plastic resin molded product or the like can be used, and the synthetic resin material is used as a frame material of a core material or in a state of being bonded to a frame material made of a wood material.

In general, the core material is filled with a panel-like paper core, foam or the like in a space surrounded by a frame material reinforced by crosspieces as required.

A thermosetting resin decorative plate such as a melamine decorative plate or a diallyl phthalate decorative plate is used as the non-porous surface plate to be attached to the core material surface, and one of the edge material surfaces on the decorative plate surface side of the panel is used. Layered to cover part or all,
To be glued.

As the water-based adhesive for attaching the front plate to the core material, vinyl acetate resin adhesive, ethylene vinyl acetate copolymer resin adhesive, acrylic resin adhesive, acrylic vinyl acetate resin adhesive, urea resin adhesive Agent, urea resin, vinyl acetate resin mixed adhesive, etc. are used, applied to each surface of the face plate and the core material, and woven cloth to the non-porous adhesive face between the face plate and the edge material, A porous sheet-like material having air permeability such as a non-woven fabric is inserted, and the sheets are overlapped with each other in an intervening state, and pressed and bonded.

The non-porous surface plate and the porous portion of the core material are easily adhered by a common water-based adhesive bonding method. Even if the non-porous surface plate is attached to the non-porous material such as the edge material, the water content in the adhesive remains and the adhesive force cannot be obtained. But,
By interposing a porous sheet having air permeability between the adherend surfaces, the moisture of the adhesive is moved through the porous sheet and volatilized to the outside to enable the adhesion.

[0019]

【Example】

Example 1 An example of the present invention will be described with reference to FIGS. 1 and 2. 21mm thick to make the frame material 2 of the core material 1 of the decorative panel
A weir surrounding the four circumferences is provided on the second type plywood, and a composite plate in which white colored epoxy resin is cast to form a layer with a thickness of 10 mm is further attached to two 21 type thickness plywoods. After that, the core material 1 of the panel was cut so that the thickness thereof was 40 mm, and the epoxy resin cast portion serving as the non-porous edge material 3 was arranged so as to be on the wood mouth side of the panel.

The dimensions of the vertical frame and the horizontal frame are respectively 1505
mm and 1055 mm, and the joints were cut at 45 ° C. in the longitudinal direction so that they were joined at an angle of 90 ° C.
This frame member 2 was joined together by using an epoxy resin adhesive and a tacker, and assembled as a panel frame member 2.

In the space surrounded by the frame member 2, JIS
A paper core for panel specified in A6931 is filled with a roll core having a thickness of 40 mm and a cell size of 13 mm,
It was used as the core material 1 of the panel.

A melamine decorative board having a thickness of 1.6 mm is used as the front board 4 of the panel, and an emulsion type vinyl acetate resin adhesive which is an aqueous adhesive 5 is applied to the back surface of the melamine decorative board and the surface of the core material 1. An epoxy resin cast part and a non-porous surface plate which become non-porous rim material 3 forming the outer periphery of the core material 1 after coating using a low router so that the coating amount of each is about 100 g / m ^2. 4 between the melamine decorative board and the surface to be adhered, a frosted cloth, which is a porous sheet-like material 6 cut into a size corresponding to the cross-sectional shape of the epoxy resin cast portion, is interposed, and the front board 4 has the core material 2 Are laminated and sandwiched together, then pressed using a woodworking press at a pressure of 0.5 kgf / cm ² and left at room temperature for a day and a night to bond them, and then the melamine decorative board which is the non-porous surface board 4. And the end of the non-porous rim material 3 of the epoxy resin cast product to the specified size. Cross and, further, subjected to chamfering using Torima to obtain a partition for decorative panel 7 of dimensions 1000 mm × 1500 mm.

Comparative Example 1 A decorative panel was obtained in the same manner as in Example 1 except that the porous sheet material 6 was not used. However, during chamfering with a trimmer after standing at room temperature for one day, If the adhesive 5 is not solidified, the front plate 4 and the edge member 3
And peeled off.

[0024]

EFFECTS OF THE INVENTION Conventionally, in the case of bonding non-porous materials together, when a water-based adhesive is pasted, the adherend is hermetically sealed because there is no vent hole for volatilizing water contained in the adhesive, Although the adhesive did not solidify and the adhesive force could not be exerted, the method of the present invention, that is, by interposing a porous sheet-like material between the adherends, the water content becomes porous such as fibers. The adhesive force is obtained as the adhesive moves through the gaps, is diffused into the air, and the adhesive solidifies.

Generally, the water-based adhesive has excellent coating workability and does not contain an organic solvent, and therefore has a characteristic of less problem of odor and environmental pollution. In the present invention, by utilizing this characteristic, conventional It was possible to bond non-porous materials together, which was difficult.

In the method of the present invention, since the edge material is fixed in advance to the frame material of the core material, the front plate can be attached so as to cover the edge material, and the front plate and the edge material are integrated. As a result, the adhesive strength is improved and the edge material can be made inconspicuous when viewed from the decorative surface, and the designability is improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of the material constitution of a decorative panel of the present invention.

FIG. 2 is a cross-sectional view showing an example of a decorative panel of the present invention.

[Explanation of symbols]

 1 Core material 2 Frame material 3 Non-porous edge material 4 Non-porous surface board 5 Water-based adhesive 6 Porous sheet material 7 Decorative panel

Claims (2)

[Claims] 1. A flash panel core material in which at least a part of a wood mouth part is composed of a non-porous rim material, so that a non-porous surface plate covers a part of the rim material with an aqueous adhesive. A method for manufacturing a decorative panel, characterized in that, in the step of laminating, a porous sheet-like material is interposed between the non-porous rim material and the non-porous surface plate to bond them. 2. A non-porous edging material constituting the opening portion of the flash panel core material is a synthetic resin edging material, a non-porous surface board is a melamine decorative board, and the step of bonding with a water-based adhesive is carried out. The method for producing a decorative panel according to claim 1, wherein the porous sheet-like material interposed between the synthetic resin edge material and the melamine decorative board is a cloth or a non-woven cloth.